Advantages of not looking in a mirror

I suppose there are disadvantages to not being able to see myself in the mirror.  What if I have something stuck in my teeth?  On my face?  If I have a stain on my shirt?  But, I listened to a podcast yesterday from a gerontologist who talks about how we feel younger than we look and how we are suprised when we see our older selves in mirrors.  Blind people will go on how they feel and not how they look!  What a great advantage.